using System;
using System.Windows.Forms;
using FBroSharp;
using FBroSharp.Lib;
using FBroSharp.Event;
using FBroSharp.DataType;
using FBroSharp.Value;
using FBroSharp.Const;

namespace Cookie管理浏览器
{
    /// <summary>
    /// 浏览器事件处理类 - MANDATORY for browser creation
    /// </summary>
    public class BrowserEvent : FBroSharpBrowserEvent
    {
        private Form1 _form;

        public BrowserEvent(Form1 form)
        {
            _form = form;
        }

        /// <summary>
        /// ⚠️ REQUIRED: 浏览器创建完成 (TWO parameters!)
        /// </summary>
        public override void OnAfterCreated(IFBroSharpBrowser browser, IFBroSharpDictionaryValue extrainfo)
        {
            _form.UpdateStatus("浏览器已就绪");
        }

        /// <summary>
        /// ⚠️ CRITICAL: 弹窗控制 - 在当前窗口打开链接
        /// </summary>
        public override bool OnBeforePopup(
            IFBroSharpBrowser browser,
            IFBroSharpFrame frame,
            string target_url,
            string target_frame_name,
            FBroSharpWindowOpenDisposition target_disposition,
            bool user_gesture,
            FBroSharpPopupfeatures popupFeatures,
            ref FBroSharpWindowsInfo windowInfo,
            ref FBroSharpBrowserSetting settings,
            ref bool no_javascript_access,
            IFBroSharpUseExtraData user_settings)
        {
            // 在当前窗口打开链接，阻止新窗口弹出
            frame.LoadURL(target_url);
            return true; // true = 阻止弹窗
        }

        /// <summary>
        /// ⚠️ REQUIRED: 地址改变
        /// </summary>
        public override void OnAddressChange(IFBroSharpBrowser browser, IFBroSharpFrame frame, string url)
        {
            if (frame.IsMain())
            {
                _form.UpdateUrl(url);
            }
        }

        /// <summary>
        /// ⚠️ REQUIRED: 标题改变
        /// </summary>
        public override void OnTitleChange(IFBroSharpBrowser browser, string title)
        {
            _form.UpdateTitle(title);
        }

        /// <summary>
        /// ⚠️ REQUIRED: 加载状态改变
        /// </summary>
        public override void OnLoadingStateChange(IFBroSharpBrowser browser, bool isLoading, bool canGoBack, bool canGoForward)
        {
            _form.UpdateLoadingState(isLoading);
        }

        /// <summary>
        /// ⚠️ REQUIRED: 页面加载完成
        /// </summary>
        public override void OnLoadEnd(IFBroSharpBrowser browser, IFBroSharpFrame frame, int httpStatusCode)
        {
            if (frame.IsMain())
            {
                _form.UpdateStatus($"加载完成 (HTTP {httpStatusCode})");
            }
        }

        /// <summary>
        /// ⚠️ REQUIRED: 页面加载错误 (errorCode is int!)
        /// </summary>
        public override void OnLoadError(IFBroSharpBrowser browser, IFBroSharpFrame frame,
            int errorCode, string errorText, string failedUrl)
        {
            if (frame.IsMain())
            {
                _form.UpdateStatus($"加载失败: {errorText}");
            }
        }

        /// <summary>
        /// ⚠️ REQUIRED: 浏览器关闭前
        /// </summary>
        public override void OnBeforeClose(IFBroSharpBrowser browser)
        {
            // Cleanup
        }

        /// <summary>
        /// ⚠️ REQUIRED: 是否允许关闭浏览器
        /// </summary>
        public override bool DoClose(IFBroSharpBrowser browser)
        {
            return false; // false = 允许关闭
        }
    }
}

